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Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution - ️️d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing - ️️d. Damping in a transducer a. reduces the number of cycles in a pulse and increases the quality factor b. increases the number of cycles in a pulse and increases penetration c. causes poor axial and lateral...

What is described as the ability of an object to resist compression and relates to the hardness of a medium? stiffness An increase in PRF would lead to an increase in DF what has the higher propagation speed? air, bone, soft tissue or water bone what has a lower propagation speed? water, soft tissue, bone or lung tissue lung tissue

SPI PRACTICE QUESTIONS 2023/2024 Sound waves are: - ANSWER-longitudinal, mechanical The speed of sound in soft tissue is closest to: - ANSWER-1,500 m/s The frequency closest to the lower limit of ultrasound is: - ANSWER-15,000 Hz Which is not an acoustic variable? - ANSWER-intensity The effects of soft tissue on ultrasound are called: - ANSWER-acoustic propagation properties All of the following are true EXCEPT: - ANSWER-two waves with identical frequencies must interfere const...

Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution-ans Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing-ans

SPI ARDMS EXAM |Q & A |ALREADY GRADED A+ |2024 UPDATE What type of wave is sound? Correct Ans ~ mechanical and longitudinal The frequency ranges for ultrasound are: Correct Ans ~ >20 kHz The speed of sound in soft tissue is: Correct Ans ~ 1540 m/s which of the following transducers fires the elements in groups? A. Linear sequenced array B. Phased array C. Continuous-wave transducer D. Single-element transducer Correct Ans ~ A Enhancement is caused by** Correct Ans ~ weakly attenuati...

SPI URR MOCK EXAM 1 | 164 QUESTIONS AND CORRECT DETAILED ANSWERS | UPDATED ____ is defined as specific area or location where Doppler shift info is being obtained. A. spectral broadening B. nyquist limit C. sample volume D. spectral window - ANSWER C. sample volume Spatial resolution is: A. the minimum reflector separation required to produce separate echos. B. highest with linear phased arrays. C. the weakest reflected signal the transducer can receive D. another term for slice thi...

Ultrasound waves that are traveling through a medium consist of a. electromagnetic and radio frequencies b. compressions and refractions c. electromagnetic and ionizing frequencies d. compressions and rarefactions - ️️d. What is the difference between audible sound and ultrasound? a. audible sound waves can travel through a vacuum b. audible sound has a higher frequency c. ultrasound has a higher frequency d. ultrasound waves are ionizing - ️️c. Damping in a transducer a. redu...

ARDMS SPI STUDY GUIDE Ultrasound Physics Certification Test Study | 180 ACTUAL QUESTIONS AND ANSWERS 100% WELL ILLUSTRATED | UPDATED

While performing a sonographic examination, you have performed both preprocessing and postprocessing functions. Which of the following functions is postprocessing? A. Write-zoom magnification B. Frequency change C. Gray-scale map assignment D. Scan line density E. Acoustic power output - ️️C You have chosen to enlarge an ultrasound image with a read magnification. Which of the following is NOT related to read magnification? A. Preprocessing B. Increased pixel size C. Performance o...